CN101386074A - Manufacture method of powder metallurgy thin wall long pole - Google Patents
Manufacture method of powder metallurgy thin wall long pole Download PDFInfo
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- CN101386074A CN101386074A CNA2007101322623A CN200710132262A CN101386074A CN 101386074 A CN101386074 A CN 101386074A CN A2007101322623 A CNA2007101322623 A CN A2007101322623A CN 200710132262 A CN200710132262 A CN 200710132262A CN 101386074 A CN101386074 A CN 101386074A
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- powder
- press
- lubricant
- thin wall
- iron powder
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Abstract
The invention relates to a preparation method used for a powder metallurgy part, in particular to a preparation method used for a powder metallurgy thin-wall long rod; firstly, copper powder, graphite, lubricant and reduced iron powder are uniformly mixed; subsequently, the mixed materials are arranged in a pressing machine and pressed as a blank; the press is provided with a temperature control system; finally, the pressed blank is sintered; subsequently, the temperature is kept and the sintered blank is arranged in a water jacket so as to be cooled and formed. The main iron powder of the raw material selects the reduced iron powder which has low price and high green strength; the lubricant is added which can reduce the heat generated in the pressing process and ensures the stability of the pressing performance of the powder; furthermore, the press is provided with the temperature control system, thus ensuring that all performances of the produced products are ensured.
Description
Technical field
The present invention relates to a kind of manufacture method of powdered metal parts, relate in particular to the manufacture method that thin wall long pole is made the high-strength powder metallurgical structural member.
Background technology
Thin wall long pole is the typical products of motorcycle vibration absorber with pole socket, owing to be thin wall long pole, its rigidity is relatively poor, often fracture easily in use, and press is in pressing process, because friction between powder and the friction between powder and mould, can produce a large amount of heat, and the generation of heat has caused product size extremely unstable, cause is along with variation of temperature, and the suppression performance of powder is changing, and we can't know its variation of temperature situation at present, thereby can't adjust the compacting parameter according to variation of temperature, make and suppress its rigidity of part of coming out, intensity and surface quality etc. are not satisfactory.
Summary of the invention
The present invention is directed to above-mentioned defective, purpose is to provide a kind of manufacture method that can guarantee the powder metallurgy thin wall long pole of thin wall long pole rigidity, intensity and surface quality.
Technical scheme of the present invention is: the present invention carries out according to the following steps:
(1) batching: with copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%-2%, graphite 0.8%-1.0%, lubricant 0.6%-0.8%, and all the other are reduced iron powder.
(2) press forming: the above-mentioned material for preparing is placed in the press, and press power is 4T/cm
2-4.5T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base that suppresses is carried out sintering under 1100 ℃～1120 ℃ conditions, after insulation 25-35 divides, put into the water jacket cooling.
Described lubricant is micro mist wax or zinc stearate.
Main part iron powder among the present invention in the raw material has been selected reduced iron powder for use, and not only price is low for it, and the green strength height.Added the lubricant of reasonable component percentages among the present invention, can in pressing process, effectively reduce the friction of each friction pair, reduce the generation of heat, guarantee that the suppression performance of powder is stablized, the present invention is provided with temperature control system on press in addition, can adjust parameters such as mold temperature or press press power according to variation of temperature, guarantee part its properties of product stable in pressing process, thereby guarantee that the every performance of the product of producing is guaranteed.
The specific embodiment
Embodiment 1:
The present invention carries out according to the following steps:
(1) batching: with copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%, graphite 0.8%, lubricant 0.6%, and all the other are reduced iron powder.
(2) press forming: the above-mentioned material for preparing is placed in the press, and press power is 4.5T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base that suppresses is carried out sintering at 1120 ℃, be incubated after 35 minutes, put into the water jacket cooling.
Described lubricant is a micro mist wax.
Embodiment 2
The present invention carries out according to the following steps:
(1) batching: with copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 2%, graphite 1.0%, lubricant 0.8%, and all the other are reduced iron powder.
(2) press forming: the above-mentioned material for preparing is placed in the press, and press power is 4T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base that suppresses is carried out sintering at 1100 ℃, after the insulation 25, put into the water jacket cooling.
Described lubricant is a zinc stearate.
Claims (2)
1, the manufacture method of powder metallurgy thin wall long pole is characterized in that, it carries out according to the following steps:
(1) batching: with copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%-2%, graphite 0.8%-1.0%, lubricant 0.6%-0.8%, and all the other are reduced iron powder.
(2) press forming: the above-mentioned material for preparing is placed in the press, and press power is 4T/cm
2-4.5T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base that suppresses is carried out sintering under 1100 ℃～1120 ℃ conditions, after insulation 25-35 divides, put into the water jacket cooling forming.
2, the manufacture method of powder metallurgy thin wall long pole according to claim 1 is characterized in that, described lubricant is micro mist wax or zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101322623A CN101386074A (en) | 2007-09-14 | 2007-09-14 | Manufacture method of powder metallurgy thin wall long pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101322623A CN101386074A (en) | 2007-09-14 | 2007-09-14 | Manufacture method of powder metallurgy thin wall long pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101386074A true CN101386074A (en) | 2009-03-18 |
Family
ID=40475856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101322623A Pending CN101386074A (en) | 2007-09-14 | 2007-09-14 | Manufacture method of powder metallurgy thin wall long pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101386074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028730A (en) * | 2012-10-25 | 2013-04-10 | 安徽蓝博旺机械集团合诚机械有限公司 | Powder metallurgy preparation method of valve clack of membrane valve |
| CN104674111A (en) * | 2015-03-07 | 2015-06-03 | 佛山市汇禧建筑五金制品有限公司 | Powder metallurgy sintering gear and application thereof |
-
2007
- 2007-09-14 CN CNA2007101322623A patent/CN101386074A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028730A (en) * | 2012-10-25 | 2013-04-10 | 安徽蓝博旺机械集团合诚机械有限公司 | Powder metallurgy preparation method of valve clack of membrane valve |
| CN103028730B (en) * | 2012-10-25 | 2015-07-15 | 安徽蓝博旺机械集团合诚机械有限公司 | Powder metallurgy preparation method of valve clack of membrane valve |
| CN104674111A (en) * | 2015-03-07 | 2015-06-03 | 佛山市汇禧建筑五金制品有限公司 | Powder metallurgy sintering gear and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090318 |